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76 lines
4.5 KiB
Diff
76 lines
4.5 KiB
Diff
From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
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From: Shane Freeder <theboyetronic@gmail.com>
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Date: Sun, 15 Oct 2017 00:29:07 +0100
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Subject: [PATCH] revert serverside behavior of keepalives
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This patch intends to bump up the time that a client has to reply to the
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server back to 30 seconds as per pre 1.12.2, which allowed clients
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more than enough time to reply potentially allowing them to be less
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tempermental due to lag spikes on the network thread, e.g. that caused
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by plugins that are interacting with netty.
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We also add a system property to allow people to tweak how long the server
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will wait for a reply. There is a compromise here between lower and higher
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values, lower values will mean that dead connections can be closed sooner,
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whereas higher values will make this less sensitive to issues such as spikes
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from networking or during connections flood of chunk packets on slower clients,
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at the cost of dead connections being kept open for longer.
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diff --git a/src/main/java/net/minecraft/server/PlayerConnection.java b/src/main/java/net/minecraft/server/PlayerConnection.java
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index 5b74b394bb832699d2d54030ee691fbe9648f170..479d3f9d5fd8d619655811b32e8182cc23a538f9 100644
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--- a/src/main/java/net/minecraft/server/PlayerConnection.java
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+++ b/src/main/java/net/minecraft/server/PlayerConnection.java
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@@ -74,7 +74,7 @@ public class PlayerConnection implements PacketListenerPlayIn {
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private final MinecraftServer minecraftServer;
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public EntityPlayer player;
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private int e;
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- private long lastKeepAlive; private void setLastPing(long lastPing) { this.lastKeepAlive = lastPing;}; private long getLastPing() { return this.lastKeepAlive;}; // Paper - OBFHELPER
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+ private long lastKeepAlive = SystemUtils.getMonotonicMillis(); private void setLastPing(long lastPing) { this.lastKeepAlive = lastPing;}; private long getLastPing() { return this.lastKeepAlive;}; // Paper - OBFHELPER
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private boolean awaitingKeepAlive; private void setPendingPing(boolean isPending) { this.awaitingKeepAlive = isPending;}; private boolean isPendingPing() { return this.awaitingKeepAlive;}; // Paper - OBFHELPER
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private long h; private void setKeepAliveID(long keepAliveID) { this.h = keepAliveID;}; private long getKeepAliveID() {return this.h; }; // Paper - OBFHELPER
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// CraftBukkit start - multithreaded fields
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@@ -105,6 +105,7 @@ public class PlayerConnection implements PacketListenerPlayIn {
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private int E;
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private int receivedMovePackets;
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private int processedMovePackets;
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+ private static final long KEEPALIVE_LIMIT = Long.getLong("paper.playerconnection.keepalive", 30) * 1000; // Paper - provide property to set keepalive limit
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public PlayerConnection(MinecraftServer minecraftserver, NetworkManager networkmanager, EntityPlayer entityplayer) {
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this.minecraftServer = minecraftserver;
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@@ -191,18 +192,25 @@ public class PlayerConnection implements PacketListenerPlayIn {
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}
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this.minecraftServer.getMethodProfiler().enter("keepAlive");
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- long i = SystemUtils.getMonotonicMillis();
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-
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- if (i - this.lastKeepAlive >= 25000L) { // CraftBukkit
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- if (this.awaitingKeepAlive) {
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- this.disconnect(new ChatMessage("disconnect.timeout"));
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- } else {
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- this.awaitingKeepAlive = true;
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- this.lastKeepAlive = i;
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- this.h = i;
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- this.sendPacket(new PacketPlayOutKeepAlive(this.h));
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+ // Paper Start - give clients a longer time to respond to pings as per pre 1.12.2 timings
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+ // This should effectively place the keepalive handling back to "as it was" before 1.12.2
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+ long currentTime = SystemUtils.getMonotonicMillis();
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+ long elapsedTime = currentTime - this.getLastPing();
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+
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+ if (this.isPendingPing()) {
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+ if (!this.processedDisconnect && elapsedTime >= KEEPALIVE_LIMIT) { // check keepalive limit, don't fire if already disconnected
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+ PlayerConnection.LOGGER.warn("{} was kicked due to keepalive timeout!", this.player.getName()); // more info
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+ this.disconnect(new ChatMessage("disconnect.timeout", new Object[0]));
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+ }
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+ } else {
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+ if (elapsedTime >= 15000L) { // 15 seconds
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+ this.setPendingPing(true);
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+ this.setLastPing(currentTime);
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+ this.setKeepAliveID(currentTime);
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+ this.sendPacket(new PacketPlayOutKeepAlive(this.getKeepAliveID()));
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}
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}
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+ // Paper end
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this.minecraftServer.getMethodProfiler().exit();
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// CraftBukkit start
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